Coastal submarine cable laying China still need to strengthen

There are market analysis, submarine cable system only terminal equipment sales of nearly 600 million US dollars, submarine cable system market total sales of more than 10 billion US dollars.

China's coastal submarine cable laying the situation is not optimistic, China does not have its own coastal submarine cable system. Zhao Zisen academician in the June 6 held "2017 optical information and optical network conference," said China'ssubmarine optical network construction is generally "flower color" submarine cable network. In addition, China also helped Southeast Asia and Central America, South America to build "flower color" submarine cable network.

Zhao Zisen academician said, cable laying and maintenance is the most troublesome problem of optical communication equipment manufacturers. There are two kinds of laying of submarine cable, one is to manufacture the cable on the ship, the side of the production of laying; the second is, land and coastal manufacturing: land cable, plate on board, laying along the coast.

The laying of submarine cable is also divided into shallow cable laying and laying of deep sea cable. Shallow laying of the laying of water is generally underwater robot ditch and detection, laying the deep sea cable laying directly, no ditch placed.

With the continuous progress of science and technology, China's long-distance fiber has been very good development, fiber transmission can reach 100G or 400G, which, the domestic development of the maximum length (245km) double armor copper tube structure submarine cable, Breakthroughs in large-length submarine cable copper pipe welding technology manufacturing bottlenecks, and to achieve a variety of natural transition.